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How to Clean Block Paving: A Simple Guide

Block paving can significantly enhance the appearance of your driveway, patio, or garden path. However, it requires regular maintenance to keep it looking its best. Dirt, moss, weeds, and stains can accumulate over time, making your paving look unsightly. Fortunately, cleaning block paving is a straightforward task that you can do yourself. In this guide, we’ll walk you through the steps to effectively clean your block paving and keep it in top condition.

Why Clean Block Paving?

Regular cleaning of block paving not only maintains its aesthetic appeal but also extends its lifespan. Cleaning prevents the growth of weeds and moss, which can cause damage over time. Additionally, removing dirt and grime helps prevent slippery surfaces, reducing the risk of accidents.

Tools and Materials Needed

Before you begin, gather the following tools and materials:

  • Stiff broom or brush
  • Pressure washer (optional but recommended)
  • Bucket
  • Garden hose
  • Weed killer (optional)
  • Sand (for re-sanding joints)
  • Mild detergent or specialized paving cleaner
  • Protective gloves and goggles

Step-by-Step Guide to Cleaning Block Paving

Step 1: Remove Weeds and Moss

The first step in cleaning block paving is to remove any weeds or moss that may have accumulated between the joints. You can do this manually by hand or use a weed killer. If you choose to use a weed killer, follow the manufacturer’s instructions carefully. Allow the weed killer to take effect, usually for a day or two, before proceeding with the cleaning.

Step 2: Sweep the Area

Once the weeds and moss are removed, sweep the entire area with a stiff broom or brush. This will help to remove loose dirt, leaves, and debris from the surface of the paving. Pay special attention to the joints between the blocks, as dirt and debris tend to accumulate there.

Step 3: Apply a Cleaning Solution

Next, prepare a cleaning solution. You can use a mild detergent mixed with water or a specialized block paving cleaner. If you’re using a commercial cleaner, follow the manufacturer’s instructions for dilution and application. Pour the solution over the block paving, ensuring it covers all areas.

Step 4: Scrub the Surface

Using a stiff brush, scrub the surface of the block paving to lift dirt and stains. Work in small sections, applying a bit of elbow grease to ensure a thorough clean. Pay particular attention to any stubborn stains or heavily soiled areas.

Step 5: Rinse with Water

After scrubbing, rinse the block paving thoroughly with clean water. You can use a garden hose for this step, but for a more effective clean, a pressure washer is recommended. A pressure washer will help to remove any remaining dirt and grime, leaving your paving looking fresh and clean. Be cautious when using a pressure washer to avoid damaging the paving or dislodging the joint sand.

Step 6: Re-sand the Joints

Once the block paving is clean and dry, you may notice that some of the joint sand has been washed away. Re-sanding the joints is an essential step to maintain the stability and integrity of the paving. Use kiln-dried sand for this purpose. Simply pour the sand over the paving and sweep it into the joints using a broom. Ensure the sand is evenly distributed and fills all the gaps.

Step 7: Apply a Sealer (Optional)

For added protection and to keep your block paving looking pristine for longer, consider applying a sealer. A sealer helps to protect against stains, inhibits weed growth, and makes future cleaning easier. Choose a sealer suitable for block paving and follow the manufacturer’s instructions for application. Typically, this involves applying the sealer with a roller or sprayer and allowing it to dry thoroughly.

Tips for Maintaining Block Paving

  1. Regular Sweeping: Sweep your block paving regularly to remove leaves, dirt, and debris. This prevents the buildup of organic material that can promote weed growth.
  2. Prompt Stain Removal: Address spills and stains promptly to prevent them from setting in. Use appropriate cleaning agents for different types of stains, such as oil or rust.
  3. Weed Control: Regularly inspect your block paving for weeds and remove them as soon as they appear. Using a weed barrier under the paving can help reduce weed growth.
  4. Avoid Harsh Chemicals: Avoid using harsh chemicals or bleach, as they can damage the paving and harm surrounding plants and grass.
  5. Re-sand Annually: Re-sand the joints of your block paving at least once a year to maintain its stability and appearance.

Frequently Asked Questions

How often should I clean my block paving?

It’s advisable to clean your block paving at least once a year. However, if your paving is in a shaded area or prone to moss and weed growth, more frequent cleaning may be necessary.

Can I use a pressure washer on block paving?

Yes, you can use a pressure washer, but use it with caution. High pressure can dislodge the joint sand and potentially damage the paving. Use a pressure washer with a fan nozzle and keep the pressure low to moderate.

What is the best cleaner for block paving?

A mild detergent or a specialized block paving cleaner is ideal. Avoid using harsh chemicals or bleach, as they can damage the paving.

How do I remove oil stains from block paving?

For oil stains, use a degreaser or a specialized oil stain remover. Apply the product according to the manufacturer’s instructions, scrub with a stiff brush, and rinse thoroughly with water.

Can I seal my block paving myself?

Yes, you can seal your block paving yourself. Choose a suitable sealer, and follow the manufacturer’s instructions for application. Ensure the paving is clean and dry before applying the sealer.

Is it necessary to re-sand block paving?

Yes, re-sanding the joints is essential after cleaning to maintain the stability and appearance of the paving. Use kiln-dried sand for best results.


Cleaning block paving is a straightforward process that can significantly enhance the appearance and longevity of your outdoor spaces. By following these steps and maintaining your paving regularly, you can keep it looking pristine and free from weeds and moss.

For a professional touch or if you need assistance with your block paving, contact VIV Construct Group for a quote. Our team of experts is here to help you maintain your outdoor spaces with ease.